One shot sally
A girl who gets pregnant the first time she has sex with each new partner.
Friend 1: Did you hear about Jane? She had an abortion a few months ago, then started dating John and is already pregnant again!
Friend 2: Yeah, she’s a one shot sally.
Friend 2: Yeah, she’s a one shot sally.
one shot sally
Where you use something once, and it gets the job done.
David is a one shot sally. Damn this one gun in MW3 that only reloads once in a lifetime but kills a butt load of kids in one shot is a one shot sally.